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公开(公告)号：US10210887B1
公开(公告)日：2019-02-19
申请号：US15956901
申请日：2018-04-19
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Kirill A. Rivkin , Mourad Benakli , Todd M. Lammers , Ralph William Cross
Abstract: Systems and methods for a providing a chirped current profile with an undershoot for a channel preamplifier are described. A method for writing bits in a magnetic recording disc may include applying an overshoot to a write current which is supplied to a magnetic writer of the magnetic recording disc and applying an undershoot to the write current after the overshoot is applied to at least partially de-saturate the magnetic writer. The method may also include writing a bit to the magnetic recording disc with the magnetic writer using the supplied write current. In some examples, the application of a short negative pulse after an overshoot portion of the write current waveform is delivered to the head during a write operation that writes the bit to the magnetic recording disc.
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公开(公告)号：US09715888B1
公开(公告)日：2017-07-25
申请号：US15130357
申请日：2016-04-15
Applicant: Seagate Technology LLC
Inventor： Muhammad Asif Bashir , Kirill A. Rivkin , JianHua Xue , Beverley R. McConnell , Wei Tian
CPC classification number: G11B5/17 , G11B5/1278 , G11B5/3123
Abstract: A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.
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公开(公告)号：US10141014B1
公开(公告)日：2018-11-27
申请号：US15662682
申请日：2017-07-28
Applicant: Seagate Technology LLC
Inventor： Kirill A. Rivkin , Wei Tian , XiaoHong Zhang , Yi Liu
Abstract: A write head including a bearing surface and a write pole having a front surface that forms a portion of the bearing surface. The front surface has a leading edge, a trailing edge and side edges connecting the leading and trailing edges. The write head also includes side shields proximate to the side edges of the write pole, and a trailing shield over the write pole and the side shields. A trailing shield-write pole gap is present between the trailing edge and the trailing shield, and a trailing shield-side shield gap is present between the trailing shield and the side shields. The trailing shield side shield gap is substantially less than the trailing shield-write pole gap.
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公开(公告)号：US08947807B2
公开(公告)日：2015-02-03
申请号：US13722724
申请日：2012-12-20
Applicant: Seagate Technology LLC
Inventor： Kevin Richard Heim , Kirill A. Rivkin , Eric Meloche , John Wolf
CPC classification number: G11B5/012 , G11B5/02 , G11B5/3123
Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.
Abstract translation: 具有两个单独驱动的写入线圈的写入器组件允许由写入器组件生成的组合写入字段对于特定应用进行精细转换和优化。 为了单独驱动写入线圈，可以将两个前置放大器并入到印刷电路板中。 在其他实现中，可以存在多于两个的写入线圈和相应的前置放大器。
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公开(公告)号：US11593636B1
公开(公告)日：2023-02-28
申请号：US16238847
申请日：2019-01-03
Applicant: Seagate Technology LLC
Inventor： Kirill A. Rivkin , Javier Guzman , Mourad Benakli
Abstract: A machine learning system and method. The machine learning system includes at least one computation circuit that performs a weighted summation of incoming signals and provides a resulting signal. The weighted summation is carried out at least in part by a magnetic element in which weights are adjusted based on changes in effective magnetic susceptibility of the magnetic element.
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Patent Agency Ranking
公开(公告)号：US10699733B1
公开(公告)日：2020-06-30
申请号：US16174551
申请日：2018-10-30
Applicant: Seagate Technology LLC
Inventor： Kirill A. Rivkin , Wei Tian , XiaoHong Zhang , Yi Liu
Abstract: A write head including a bearing surface and a write pole having a front surface that forms a portion of the bearing surface. The front surface has a leading edge, a trailing edge and side edges connecting the leading and trailing edges. The write head also includes side shields proximate to the side edges of the write pole, and a trailing shield over the write pole and the side shields. A trailing shield-write pole gap is present between the trailing edge and the trailing shield, and a trailing shield-side shield gap is present between the trailing shield and the side shields. The trailing shield-shield shield gap is substantially less than the trailing shield-write pole gap.
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公开(公告)号：US10134428B1
公开(公告)日：2018-11-20
申请号：US15797668
申请日：2017-10-30
Applicant: Seagate Technology LLC
Inventor： Kirill A. Rivkin , JianHua Xue , Wei Tian , Lei Lu , Jian Zhong
Abstract: A data writer may be constructed and operated as part of a data storage device. The data writer can be positioned proximal a data storage medium. The data writer may have a write pole positioned adjacent a writer coil with the writer coil having a plurality of turns. A controller that is connected to each turn can be adapted to selectively activate less than all the coil turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the coil turns in response to the data writer being positioned over a second portion of the data storage medium.
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公开(公告)号：US09978401B1
公开(公告)日：2018-05-22
申请号：US15497473
申请日：2017-04-26
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Kirill A. Rivkin , Mourad Benakli , Todd M. Lammers , Ralph William Cross
CPC classification number: G11B5/09 , G11B5/012 , G11B20/10009 , G11B20/10018
Abstract: Systems and methods for a providing a chirped current profile with an undershoot for a channel preamplifier are described. A method for writing bits in a magnetic recording disc may include applying an overshoot to a write current which is supplied to a magnetic writer of the magnetic recording disc and applying an undershoot to the write current after the overshoot is applied to at least partially de-saturate the magnetic writer. The method may also include writing a bit to the magnetic recording disc with the magnetic writer using the supplied write current. In some examples, the application of a short negative pulse after an overshoot portion of the write current waveform is delivered to the head during a write operation that writes the bit to the magnetic recording disc.
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公开(公告)号：US09805742B1
公开(公告)日：2017-10-31
申请号：US15445267
申请日：2017-02-28
Applicant: Seagate Technology LLC
Inventor： Kirill A. Rivkin , JianHua Xue , Wei Tian , Lei Lu , Jian Zhong
CPC classification number: G11B5/17 , G11B5/012 , G11B5/3123
Abstract: A data writer may be constructed and operated as part of a data storage device. The data writer can be positioned proximal a data storage medium. The data writer may have a write pole positioned adjacent a writer coil with the writer coil having a plurality of turns. A controller that is connected to each turn can be adapted to selectively activate less than all the coil turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the coil turns in response to the data writer being positioned over a second portion of the data storage medium.
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公开(公告)号：US20140177083A1
公开(公告)日：2014-06-26
申请号：US13722724
申请日：2012-12-20
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Kevin Richard Heim , Kirill A. Rivkin , Eric Meloche , John Wolf
IPC: G11B5/09
CPC classification number: G11B5/012 , G11B5/02 , G11B5/3123
Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.
Abstract translation: 具有两个单独驱动的写入线圈的写入器组件允许由写入器组件生成的组合写入字段对于特定应用进行精细转换和优化。 为了单独驱动写入线圈，可以将两个前置放大器并入到印刷电路板中。 在其他实现中，可以存在多于两个的写入线圈和相应的前置放大器。
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